Issue about MuseScore 3 on Macbook Air Always Crash while Opening

Hello,

I am using MuseScore for the past months. Just about 3 days ago, when I opened this app on my computer (OS X Yosemite, Version 10.10.5, Macbook Air), it crashes just after 3 seconds opening. I have restarted my computer for a few times and it keeps quitting after opening. I don't think if there is a virus or so. Before all this happens, everything was OK and it never crash as often as now. My computer cannot update apps or the system itself with no reason, and I don't know if the apps updates itself automatically or somehow. I am new to this app (I just start using it a couple months ago) and I don't know if there is a problem occurred in the past versions since my computer don't have an application update system. I can't even check the versions because it quits so fast and I can't open the preferences dashboard. Please check if the system occurs any issues or if it has a virus in it. Thank you.

User dannydreamer306

2020/7/19